Design, Evaluation and Implementation of an Islanding Detection Method for a Micro-grid

Taiying Zheng, Huan Yang, Rongxiang Zhao, Yong Cheol Kang and Vladimir Terzija
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Taiying Zheng: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Huan Yang: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Rongxiang Zhao: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Yong Cheol Kang: Department of Energy IT, Gachon University, Seoul 13120, Korea
Vladimir Terzija: Department of Electrical and Electronic Engineering, University of Manchester, Manchester M13 9PL, UK

Energies, 2018, vol. 11, issue 2, 1-24

Abstract: Correct and fast detection of a micro-grid (MG) islanding is essential to the MG since operation, control, and protection of the MG depend on its operating mode i.e., an interconnected mode or islanding mode. This study describes the design, evaluation and implementation of an islanding detection method for an MG, which includes a natural gas-fired generator, a doubly fed induction generator type wind generator, a photovoltaic generator, and some associated local loads. The proposed method is based on the instantaneous active and reactive powers at the point of common coupling (PCC) of the MG. During the islanding mode, the instantaneous active and reactive powers at the PCC are constants, which depend on the voltage of the PCC and the impedance of the dedicated line. The performance of the proposed method is verified under various scenarios including islanding conditions for the different outputs of the MG, and fault conditions by varying the position, type, inception angle and resistance of the fault, using the PSCAD/EMTDC simulator. This paper also concludes by implementing proposed method into a TMS320C6701 digital signal processor. The results indicate that the proposed method successfully detects islanding for the MG in islanding conditions, and remains stable in fault conditions.

Keywords: distributed generation; islanding detection; instantaneous active power; instantaneous reactive power; micro-grid (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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